OpenAI · GPT Image 2.5 FlareGPT Image 2.5 Flare Image Generator
Generate images with OpenAI's GPT Image 2.5 Flare — up to 4K, with 12 aspect ratios plus auto and prompts up to 20,000 characters. Write a prompt, pick a ratio and a resolution, and generate right in your browser on HeyMarmot. No API key, no setup.
Prompt only — GPT Image 2.5 Flare does not take reference images.
Need a starting point?
1K, 2K, and 4K output
Square, portrait, widescreen, and ultra-wide
Room for long, detailed prompts
Prompt-only, no reference image
Real AI Image Examples
Browse real images generated on HeyMarmot. Open inspiration, study prompts, and reuse a prompt in one click.
Generate a photorealistic mirror selfie captured on an iPhone 15 Pro Max, dep...
Woman in Fur Coat
Coquette Selfie
Create a mesmerizing passage of time with this prompt, seamlessly blending all four seasons—from Winter’s snow to Autumn’s gold—into a single, unified masterpiece. ❄️🌸☀️🍁 ---- Prompt ---- Hyper-realistic digital illustration of {Scene}, presented as a single continuous composition showcasing the cycle of seasons. The scene flows seamlessly from left to right in a natural progression: Winter, Spring, Summer, and Autumn. The left side features cold snowy winter elements, gradually thawing into the fresh green buds and blooms of spring, then morphing into the lush vibrant vegetation and bright sunlight of summer, and finally transitioning into the golden, orange, and red hues of autumn on the far right. There are no visible dividing lines between seasons; the weather, lighting, and vegetation blend smoothly to create a unified and harmonious panorama. Rich in detail, symbolic of the passage of time, cinematic lighting, 8k resolution, highly detailed textures. --ar 4:3 ---- Scene：the historic Shanghai Bund waterfront looking across the Huangpu River to the futuristic Lujiazui district
A hyperrealistic cinematic wide street shot. The subject stands right beside ...
AR Music Interface
What GPT Image 2.5 Flare Is Good At
OpenAI's newest image model pairs high-resolution output with unusually wide framing options.
4K output
Render at 1K while you explore, then re-run the same prompt at 2K or 4K when a layout needs real detail.
Ultra-wide and tall framing
Beyond the usual squares and 16:9, it takes 21:9, 27:16, 16:27, 9:8, and 8:9 natively.
Readable in-image text
Headlines, labels, and packaging copy come back legible instead of scrambled.
Long-prompt control
Up to 20,000 characters, so brand rules and shot notes fit in a single prompt.
GPT Image 2.5 Flare Resolutions
Three output tiers — draft cheaply, then finish at the size your layout actually needs.
1K — drafting
The fastest, cheapest tier. Use it to explore compositions and lock a direction.
2K — publishing
Enough detail for web heroes, social posts, and slides at full-bleed sizes.
4K — print and large format
For posters, packaging comps, and anything that gets cropped or printed.
GPT Image 2.5 Flare Aspect Ratios
Pick the ratio before you generate — these are the shapes creators reach for most.
1:1 Square
Avatars, icons, and feed posts.
3:4 Portrait
Editorial images and product cards.
4:3 Landscape
Classic photo framing and slides.
16:9 Widescreen
Thumbnails, hero images, and decks.
21:9 Ultra-wide
Site banners and cinematic key art.
9:16 Vertical
Stories, Shorts covers, and wallpapers.
How to Generate Images with GPT Image 2.5 Flare
Three steps from an idea to a finished image.
Write your prompt
Describe the subject, style, lighting, and any text that should appear in the image.
Pick a ratio and resolution
GPT Image 2.5 Flare is preselected. Choose an aspect ratio, then 1K, 2K, or 4K.
Generate and save
The credit cost updates with your resolution. Download the result or keep iterating.
GPT Image 2.5 Flare Use Cases
Where high-resolution output and wide framing pay off.
Social content
Feed posts, Stories covers, and thumbnails generated straight into the right ratio.
Posters & key visuals
Draft campaign art at 1K, then re-run the winner at 4K for print.
Site & app banners
21:9 and 27:16 give you real ultra-wide headers without awkward cropping.
Packaging & print comps
4K output holds up when a mockup gets scaled, cropped, or sent to a printer.
A Real Workspace Around the Model
HeyMarmot runs GPT Image 2.5 Flare for you and keeps every generation organized.
No API key
Sign in and generate — we handle the provider plumbing for you.
Switch models anytime
Compare with GPT Image 2, Nano Banana Pro, or Seedream in the same workspace.
Asset library
Every image is saved and reusable for later editing or video work.
Full history
Prompts, ratios, resolutions, and results stay in one thread you can revisit.
GPT Image 2.5 Flare FAQ
What creators ask before generating with GPT Image 2.5 Flare.
What is GPT Image 2.5 Flare?
GPT Image 2.5 Flare is an OpenAI text-to-image model that renders up to 4K and supports unusually wide and tall aspect ratios. HeyMarmot hosts its text-to-image endpoint so you can use it in the browser.
How much does GPT Image 2.5 Flare cost?
New accounts get starter credits, so your first images are covered. After that, one image costs 60 credits at 1K, 100 credits at 2K, and 160 credits at 4K.
Do I need an OpenAI API key?
No. HeyMarmot runs the model for you — sign in, write a prompt, and generate. There is nothing to install and no key to manage.
Which aspect ratios does it support?
Twelve fixed ratios plus auto: 1:1, 3:2, 2:3, 4:3, 3:4, 16:9, 9:16, 21:9, 27:16, 16:27, 9:8, and 8:9. The selector on this page lists exactly what the model accepts.
Can I upload a reference image?
Not with this model. GPT Image 2.5 Flare is text-to-image only. For reference-based generation or editing, switch to GPT Image 2, Nano Banana Pro, or Seedream in the workspace.
How is it different from GPT Image 2?
GPT Image 2 accepts reference images and is the better pick for editing an existing picture. GPT Image 2.5 Flare is text-only, but it reaches 4K and offers ultra-wide and tall ratios that GPT Image 2 does not.
Explore more AI image tools
Browse prompts, compare pricing, or edit with a reference image.